Carbureter



A. J. PICHL.

CARBURETER.

APPLICATl ON FILED FEB. 8, 1918.

1,343,983. Patented June 22, 1920 UNITED STATES PATENT OFFICE.

ANTHONY J'. PICHL, OF ST. LOUIS, MISSOURI.

CARBURETER.

Specification of Letters Patent.

Patented June 22,1920.

Application filed February 8, 1918. Serial No. 215,974.

,To all whom it may concern:

automobiles, motor boats and other conveyances, and particularly to carburetors of the type that are equipped with means for enabling the operator to change the ad ustment of the needle valve without leaving the drivers seat.

Various kinds of devices, operable from the drivers seat, have heretofore been used for changing the adjustment of the needle valve, but said devices have not proved entirely satisfactory, due, in some mstances, to the fact that the lost motion in the mechanism used to transmit movement from the manually-operable adjusting device to the needle valve results in improper adjustment of the needle and due in other in stances to the fact that the relative movement of the parts of an automobile on which the manually-operable adjusting device and the mechanism actuated by same are mounted causes the needle valve to move too far or not enough when said manually-operable device is moved a certain distance. Another objectionable feature of some of the needle valve operating devices now in use is that the operator can never tell just how far to move the manually-operable adjusting device to produce a certain result, this characteristic often causing the operator to screw the needle valve down so tight that it becomes cut and scored by the sharp edged opening on which the tapered portion of the needle valve seats.

The main object of my invention is to provide a carbureter which is so constructed that the needle valve can be adjusted properly and accurately from the drivers seat of the vehicle or conveyance on which the carbureter is used.

Another object is to providea carbureter which is so constructed that there is no danger of the needle valve becoming scored or injured by improper adjustment of same.

And still another object is to provide a carburetor having the desirable features above pointed out that can be manufactured cheaply and installed "easil on an automobile or other conveyance. ther, objects and desirable features of my invention will be hereinafter pointed out.

To this end I have devised a carburetor in which the needle valve that controls the escape of the liquid fuel from the float chamber consists of a member preferably reciprocatingly mounted and formed integral with or rigidly connected to a rod that leads to a point in proximity to the drivers seat and which virtually forms an extension of the needle valve, thereby producing a carbureter whose needle valve can be controlled accurately from the drivers seat, owing to the fact that moving said rod a certain distance results in the needle valve or needle valve portion on the end of said rod moving exactly the same distance. Such a construction also enables the operator to tell just how far and in what .direction the needle valve has to bemoved to produce a certain result, as the needle valve is reciprocatingly mounted and is provided with an extension that is pushed in one directiontoclose the valve or diminish the supply of liquid fuel and pulled in the opposite direction toopen the valve or increase the supply of liquid fuel. In the preferred form of my invention as herein shown the shank of the needle valve is cylindrical and of substantially the same diameter as the orifice through which the liquid fuel escapes from the float chamber, thereby eliminating the possibility of the needle valve becoming cut and scored in case the operator forces it down too far durlng the operation of ad usting same.

Figure 1 of the drawings is a side elevational view, illustrating a earbureter constructed in accordance with my invention installed in operative position on an automobile.

Fig. 2 is a detail view, partly in vertical section, illustrating the construction of the needle valve.

Fig. 3 is a side elevational-view of the manually-operable adjusting device on the chamber is controlled by a needle valve B which preferably consists of a reciprocatingly mounted, cylindrical-shaped member of substantially the same diameter as the orifice 2 in the bottom of the float chamber through which the liquid fuel escapes from the float chamber. The needle valve B is formed integral with or is permanently coI1- nected to a rod or wire B that leads to a point in proximity to the drivers seat of the automobile so that the driver can change the adjustment of the needle valve without leaving his seat. Said needle valve is slidingly mounted in a stationary guide C that is positioned directly above the fuel discharge opening 2 in the bottom of the float chamber, and said valve is provided at its lower end with a tapered portion 2* that is normally positioned in said fuel discharge opening 2 so that fuel can escape from the float chamber continuously when the motor is in operation. By moving the needle valve B downwardly a certain distance the cylindrical shank of same that lies adjacent the 'tapered portion 2 of the valve will enter the discharge opening 2 and completely fill said opening, thus cutting off the escape of the liquid fuel from the float chamber.

In the form of my invention herein shown the needle valve B is formed by the lower end portion of a rod or wire B whose upper end is connected to a manually-operable adjusting device D that is mounted on the steering column S of the automobile, but I wish it to be understood that it is immaterial, so far as my broad idea is concerned, whether the needle valve is formed integral with or permanently connected to a rod or wire that terminates in proximity to the driver, or is formed integral with or permanently connected to a portion that constitutes an extension of the needle valve and which is connected at its upper end to a manually-operable adjusting device arranged in proximity to the driver. In the preferred form of my invention, as herein shown, the portion B of the needle valve that leads to the manually-operable adjusting device D on the steering column is incased in a tubular member E whose upper end is secured to a supportingplate F on the steering column that carries the manually-operable adjusting device D, the portion B of the needle valve and the tubular member in which it is incased being flexible enough so that they can be bent or curved around parts of the motor or around parts of the automobile during the operation of installing the carbureter and connecting it up with the manually-operable adjusting device on the steering column. If desired, the guide C in the float chamber can be formed integral with the tubular member E previously referred to and provided with an externally-screw-threaded portion 3 that is friction between the needle valve and the.

tubular casing in which it slides is sufficient to hold the needle valve in adjusted position, but if desired, an auxiliary locking means can be provided for the needle valve, which auxiliary locking means can be so constructed that it assists the operator in properly adjusting the needle valve. In the form of my invention herein shown the manually-operable adjusting device D on the steering column is so constructed that it tends to prevent the needle valve from moving out of proper adjustment and it also assists the'operator in properly adjusting the needle valve. Said device D consists of a disk that is oscillatingly mounted on the supporting plate F, previously referred to, that is secured to the steering column, said plate having a center boss 4, as shown in Fig. 4 that projects into a sleeve 5 on the device D. A clamping screw 6 that is screwed into the boss 4 laps over the outer face of the disk D and holds said disk in engagement with the annular rim 7 on the supporting plate F, and a coiled spring 7 is interposed between the members D and F, thereby producing sufficient frictional contact between said parts to insure the device D remainin in the position in which it has been set. block 8 that is pivotally connected to the disk D and arranged between said disk and the supporting-plate F, as shown in Fig. 4:, is provided with an orifice into which the upper end of the portion B of the needle valve can be inserted, said portion B being securely connected to said block by means of a set screw 9. When the diskshaped adjusting device D is turned on its axis in one direction or another a direct thrust or pull will be imparted to the needle valve, depending upon the direction in which the device D is turned. The device D is provided with a handle D that normally extends in a direction parallel with the steering column S so as to assist the operator in properly adjusting the needle valve, for the operator knows that by moving the handle D in one direction he will close the needle valve, and by moving said handle in the opposite direction he will open the needle valve. If desired, the supporting plate F can be provided with a perforated ear 10, and the handle D .can be provided with a hole 10 so as to enable the needle valve to be locked in its closed position by turning the device D into the position shown in broken lines in Fig. 3, and then inserting the hasp of a padlock 11 through the alined holes in the handle D and in the perforated ear 9 on the supporting plate F.

A carburetor of the construction above described can be accurately adjusted from the drivers seat of the automobile or conveyance on which it is used, owing to the fact that the needle valve is a reciprocatingly mounted member that leads to a point in proximity to the drivers seat, thus enabling the operator to tell just how far and in What direction the needle valve has to be moved in order to produce a certain result. Furthermore, such a carbureter can be built cheaply and installed easily, as the needle valve and the mechanism for operating same consists simply of a piece of wire or rod that extends unbrokenly from the float chamber of the carbureter to a point in proximity to the operator. In addition to the desirable features above pointed out, it is impossible for the needle valve of my carburetor to become damaged by improperly adjusting same, owing to the fact that the shank of the needle valve is of approximately the same diameter as the fuel discharge orifice in the float chamber, thus enabling the needle valve to be pushed down into an abnormal positionwithout causing any portion of same to come into contact with a sharp valve seat or the sharp edge of the fuel discharge orifice in the float tank.

Having thus described my invention, What I claim, and desire to secure by Letters Patent, is:

'1. A carbureter for motor operated vehicles, comprising a float chamber provided with an orifice through which liquid fuel escapes, a reciprocating needle valve for regulating the discharge of fuel from said orifice, and an operating device for said valve leading to a point in proximity to the operator in charge of the vehicle and consisting of a non-compressible and non- 2. A carbureter for motor operated vehicles, comprising a float chamber provided with an orifice through which liquid fuel escapes, a reciprocating needle valve for regulating the discharge of fuel from said orifice, an operating device for said valve leading to a point in proximity to the operator in charge of the vehicle and consist ing of a non-compressible and non-extensible extension on said valve directl con nected to same and having sufficient rigidity to cause the valve to move in one direction when said extension is pushed and to move in the opposite direction when said extension is pulled, a stationary guide for said valve arranged in the float chamber above said orifice, and a tubular casing in which the extension on said valve is slidingly mounted, said casing having its lower end rigidly connected to the carbureter.

3. A carbureter, comprising a float chamber provided with an orifice through which liquid fuel escapes, a reciprocating needle valve having a pointed end portionand a shank of such diameter that it can be moved sion.

ANTHONY J. PICHL.- 

